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How much boost and still hydraulic?

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Old Dec 17, 2010 | 11:44 AM
  #21  
Beaflag VonRathburg's Avatar
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Originally Posted by 427
That was the plan all year, he is ready to step away from the street car stuff
ERL will be building his engine, and it should be a nice gain over what he was running!

Kurt
Is the bottom half being switched up from the 440 or is it just the valvetrain?

When you're choosing springs for an engine what is the thought process in selecting spring pressures? Is there a we start at x, then add y per lb of boost, minus z for valve weight, etc...?
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Old Dec 17, 2010 | 12:13 PM
  #22  
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He is changing everything!!

I don't have any formula for valvesprings, they are normally dictated by what we can buy versus the weight of parts used and rpm band.

Kurt
Originally Posted by Beaflag VonRathburg
Is the bottom half being switched up from the 440 or is it just the valvetrain?

When you're choosing springs for an engine what is the thought process in selecting spring pressures? Is there a we start at x, then add y per lb of boost, minus z for valve weight, etc...?
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Old Dec 17, 2010 | 12:51 PM
  #23  
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I heard he's switching the entire set up to go for 6's? I think it's a secret though.
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Old Dec 17, 2010 | 02:15 PM
  #24  
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I don't think Mark has any secrets, just still defining what the set up will be. Looks like square port heads on a 427ci engine.

Kurt
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